公开(公告)号：US20250080863A1

公开(公告)日：2025-03-06

申请号：US18242395

申请日：2023-09-05

Applicant: NVIDIA Corporation

Inventor： Chengwu Cui ,  Sean Midthun Pieper ,  Du-Yong Ng ,  Douglas John Taylor

IPC: H04N23/84 ,  G06T7/00 ,  G06T7/90 ,  G06T11/00 ,  G06V20/52

Abstract: Apparatuses, systems, and techniques for performing color correction are presented. In at least one embodiment, a color mapping model may be identified that maps colors, within a subspace of an input color space localized around a target color, to an adjusted color space and applied to an input image to adjust a value of one or more pixels of the input image that fall within the subspace. In at least one embodiment, a color mapping model may be initialized that maps colors, within a subspace of an input color space localized around a target color, to an adjusted color space. At least one parameter of the color mapping model may be adjusted to reduce an amount of visible artifacts produced by the color mapping model.

公开(公告)号：US20240155091A1

公开(公告)日：2024-05-09

申请号：US18059060

申请日：2022-11-28

Applicant: NVIDIA Corporation

Inventor： Chengwu Cui ,  Yongshen Ni ,  Houxin Zhange

IPC: H04N9/64 ,  H04N9/69 ,  H04N23/85

CPC classification number: H04N9/646 ,  H04N9/69 ,  H04N23/85

Abstract: In various examples, image processing techniques are presented for reducing artifacts in images for autonomous or semi-autonomous systems and applications. Systems and methods are disclosed for deferring at least a portion of a strength associated with a color correction matrix (CCM) of an image processing pipeline to one or more other stages associated with the image processing pipeline. For instance, the CCM is used to determine a first CCM and a second, deferred CCM. The first CCM may be associated with an earlier stage of the image processing pipeline while the deferred CCM is associated with a later stage of the image processing pipeline. In some examples, the deferred CCM is combined with another matrix, such as a color space conversion matrix. By deferring part of the CCM, the image processing pipeline may reduce a number of artifacts and/or eliminate the artifacts that occur when processing image data.